Density Matrix
Density-matrix simulation of small surface codes under current and projected experimental noise
... optimize and trade-off between QEC cycle parameters, assess the merits of feedback control, predict gains from future improve- ments in physical qubit performance, and quantify decoder performance. We compare an ...
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Density matrix approach for quantum free-electron lasers
... the density matrix because the spontaneous emission from the final state is also taken into ...the density matrix treatment becomes pronounced as the rate of the spontaneous emission ...the ...
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The study of optical gain for terahertz quantum cascade laser using density matrix method
... Terahertz (THz) quantum cascade lasers (QCL) are currently increasing in popularity. It is expected to become the main source of emerging terahertz radiation technology and applications. However to produce the device ...
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New Theory of Superconductivity Method of Equilibrium Density Matrix Magnetic Field in Superconductor
... The solution is significantly easier in the case when the properties of the system under analysis make it possi- ble to predict what representation is used to bring the density matrix to its diagonal ...
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A Variational Framework for Spectral Discretization of the Density Matrix in Kohn-Sham Density Functional Theory
... the density matrix. The basis of density matrix methods lies in the commutativity between the density matrix and the Kohn- Sham Hamiltonian matrix, ...the density ...
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Density matrix theory of transport and gain in quantum cascade lasers in a magnetic field
... Currently, no experimental or theoretical data on coherent phenomena in QCLs in a magnetic field are available. Since the energy spectra in such structures is discrete, it is reason- able to expect that coherent effects ...
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Accelerating Kohn–Sham response theory using density fitting and the auxiliary density matrix method
... auxiliary density matrix); the second part is a first-order correction term, evaluated as the difference between the generalized gradient approximation (GGA) exchange in the full and auxiliary basis ...
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Infinite-period density-matrix model for terahertz-frequency quantum cascade lasers
... in which the block subscripts describe interaction terms be- tween the central (C), upper (U), and lower (D) periods. The off-diagonal elements correspond to the coupling between the periods labeled by the corresponding ...
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One particle density matrix characterization of many body localization
... In this work, we provided a comprehensive discussion of the properties of the one-particle density matrix in one- dimensional systems of interacting fermions in the pre- sence of disorder. We showed that ...
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Contradiction of the DENSITY MATRIX Notion in Quantum Mechanics
... More over, results of the experiments depend on tun- ing of the coincidence events, and this tuning can be arranged in such a way that one can get not only viola- tion, but even super violation of the Bell’s ...
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Phase Space Density Matrix for Emotion Recognition
... space density matrix ...GLCM matrix from both Beta and Gamma band of the six EEG channels (Fp1, Fp2, Cz, Fz, F3, and F4) to form the features ...
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Accelerating Kohn–Sham response theory using density fitting and the auxiliary density matrix method
... Here we included a more detalied account on the results presented in the paper. We present statistics, mean errors, standard deviations and maximum absolute errors, compared to aug-pcseg- 4 reference calculations for ...
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Progress on Complex Langevin simulations of a finite density matrix model for QCD
... baryon density, Yang- Mills theories in the presence of a θ-term, systems of strongly correlated electrons and many other interesting physical ...Random Matrix Theory (RMT) model of QCD at nonzero baryon ...
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Entropic Updating of Probability and Density Matrices
... be found using our quantum relative entropy with a suitable uniform prior density matrix.. 27.[r] ...
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Optimal Aerations in the Inverse Fluidized Bed Biofilm Reactor When Used in Treatment of Industrial Wastewaters of Various Strength
... low density (matrix particle density smaller than that of liquid) particles expands downwards during fluidization, allows the control of biomass loading and provides the high oxygen concentration in ...
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Non-equilibrium dynamics of isolated quantum systems
... reduced density matrix (an integral of motion is said to be local if it can be written as an integral–sum in the case of a lattice model– of a given local current, in the spirit of Neither ...
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Study of the Electric Quadrupole Moments for some Scandium Isotopes Using Shell Model Calculations with Different Interactions Ahmed H. Ali
... The electric quadrupole moments for some scandium isotopes ( 41, 43, 44, 45, 46, 47 Sc) have been calculated using the shell model in the proton-neutron formalism. Excitations out of major shell model space were taken ...
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Dorfner, Florian (2017): Numerical methods for strongly correlated many-body systems with bosonic degrees of freedom. Dissertation, LMU München: Fakultät für Physik
... reduced density matrix using perturbation theory and the exact expression for a Bose- Hubbard model without interaction and thereby get an estimate for the optimal mode states and their weights which ...
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Formalism and Interactions in NMR
... the density matrix operator which allows such a treatment is defined and the main theorems allowing the calculation of its value at thermal equilibrium, its time-domain evolution, its expression in a ...
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Nuclear Electric Quadrapole Moments (Q) in 58Ni
... body density matrix elements (OBDM) for ground and Excited states is calculated in order to carry the calculations using single particle Transition matrix elements between excited states theme ...
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